Development of a low-cost mini environment chamber for precision instruments

Feng, Junjie; Li, Ruijun; He, Ya-Xiong; Fan, Kuang‐Chao

doi:10.1117/12.2211334

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…First, constant temperature chambers are used to reduce the interference of external temperature and the thermal deformation of internal workpieces. Feng et al [6] developed an environment chamber based on a natural convection principle to control the temperature of the micro-coordinate measuring machine, and the variation range is within ±0.02 • C when the temperature is set to 20 • C. Salas-de la Cruz et al [7] developed an environment chamber based on a proportionalintegral-derivative (PID) control system. The control accuracy is 0.05 • C-0.5 • C when the temperature is in the range of 25 • C-90 • C. Thermal deformation can be reduced with this method.…”

Section: Introductionmentioning

confidence: 99%

Modeling of nonuniform thermal deformation and high thermal stability design method for precision instruments

Wang

Li²,

Pan³

et al. 2022

Meas. Sci. Technol.

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Structural deformations caused by environmental temperature changes are the main reason affecting the accuracy of high-precision instruments. The model of nonuniform thermal deformation is established. And a new high thermal stability design method based on the developed model is proposed in this paper. The mechanism of nonuniform thermal deformation is investigated based on the principle of molecular dynamics. The mathematical models of nonuniform thermal deformation are established through Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS). The proposed design method is applied to a laser collimation system. Stability contrast experiments for the original and the optimized laser collimation systems are also carried out. The stability of the optimized laser collimation systems is improved by approximately 60% when the temperature has a change of 10 ℃. The experimental results indicate that the established model of nonuniform thermal deformation and the high thermal stability design method is effective and low cost, and can be applied to improve the thermal stability of other precision instruments.

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Section: Introductionmentioning

confidence: 99%

Modeling of nonuniform thermal deformation and high thermal stability design method for precision instruments

Wang

Li²,

Pan³

et al. 2022

Meas. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is not beneficial for the popularization and the application of the measurement system. (2) Keep the surrounding temperature of the measurement sysem stable by using an constant-temperature chamber [7,8]. Nevertheless, this method is difficult to be applied in industrial fields because of the high cost and high energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stability Analysis and Optimal Design for a Two-Dimensional Angle Sensor

Tang

et al. 2017

AMM

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A compact two-dimensional angle sensor with a measurement resolution that exhibits superior sensitivity has been designed based on the autocollimator principle to enable the precision measurement field to measure the pitch and yaw error motions of a moving object. The signal drift of this sensor affects the measured angle and is mainly caused by the change in environmental temperature. To improve the thermal stability of the sensor, computer simulation has been conducted using the finite element analysis software ANSYS 16. Simulation results show that the angle sensor is considerably stable to adopt mechanisms with a symmetrical structure. Thus, a modified optimal angle sensor is developed, and its thermal stability has been verified via contrast experiments. Compared with the original sensor, the average drift of the optimized angle sensor is reduced from 0.430 arcsec∕°C to 0.120 arcsec∕°C when the variation of the environmental temperature is 5 °C. The optimal angle sensor is ideal for high-precision measuring equipment.

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Modeling and improvement for the thermal stability of ring-shaped workpieces with shape boundary constraints

Wang,

Li,

Zhao

et al. 2024

Meas. Sci. Technol.

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Ring-shaped workpieces are commonly utilized in high-precision measuring instruments, and their thermal deformation affects the instruments’ measuring accuracy. A novel method for establishing the thermal deformation model of ring-shaped workpieces is proposed in this article. The mechanism of thermal deformation caused by shape boundaries is investigated using the principle of molecular dynamics. A mathematical model between deformation degree and height, diameter ratio, or temperature is created using a large-scale atomic/molecular massively parallel simulator. The established model is verified by measuring the thermal deformation of ring-shaped workpieces. The model is used to optimize laser collimation systems, and stability experiments for laser collimation systems in different sizes are performed. The stability of optimized systems can be improved by 50%, 50%, and 48% with temperature increases of 10 °C, 20 °C, and 30 °C, respectively. The experimental results indicate the obtained model can be utilized to improve the stability of instruments.

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Development of a low-cost mini environment chamber for precision instruments

Cited by 3 publications

References 13 publications

Modeling of nonuniform thermal deformation and high thermal stability design method for precision instruments

Modeling of nonuniform thermal deformation and high thermal stability design method for precision instruments

Thermal Stability Analysis and Optimal Design for a Two-Dimensional Angle Sensor

Modeling and improvement for the thermal stability of ring-shaped workpieces with shape boundary constraints

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